→ Virtual participation
Virtual contest is a way to take part in past contest, as close as possible to participation on time. It is supported only ICPC mode for virtual contests.
If you've seen these problems, a virtual contest is not for you - solve these problems in the archive.
If you just want to solve some problem from a contest, a virtual contest is not for you - solve this problem in the archive.
Never use someone else's code, read the tutorials or communicate with other person during a virtual contest.
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→ Status filter
→ Contest materials
Problem A - AD 2020
Contest status
| # | When | Who | Problem | Lang | Verdict | Time | Memory |
|---|---|---|---|---|---|---|---|
| 197016250 | Mar/12/2023 08:44 | vjudge1 | A - AD 2020 | C++20 (GCC 11-64) | Accepted | 327 ms | 205500 KB |
| 215348240 | Jul/24/2023 14:49 | vjudge4 | A - AD 2020 | C++20 (GCC 11-64) | Accepted | 124 ms | 7800 KB |
| 113883060 | Apr/22/2021 15:28 | vjudge1 | A - AD 2020 | MS C++ 2017 | Accepted | 967 ms | 91600 KB |
| 215304216 | Jul/24/2023 08:30 | vjudge5 | A - AD 2020 | C++20 (GCC 11-64) | Accepted | 826 ms | 3900 KB |
| 233869003 | Nov/23/2023 09:26 | Wo shi sha bi: jackle, _star# | A - AD 2020 | C++20 (GCC 11-64) | Accepted | 140 ms | 500 KB |
| 236281004 | Dec/08/2023 06:24 | vjudge3 | A - AD 2020 | C++17 (GCC 9-64) | Accepted | 936 ms | 125900 KB |
| 313094486 | Mar/30/2025 11:19 | Cupupyyy | A - AD 2020 | C++20 (GCC 13-64) | Accepted | 718 ms | 117300 KB |
| 236281028 | Dec/08/2023 06:24 | vjudge3 | A - AD 2020 | C++17 (GCC 9-64) | Accepted | 889 ms | 125900 KB |
| 296117159 | Dec/12/2024 10:00 | 不懂啊: Shuishui_0921, sha7dow# | A - AD 2020 | C++20 (GCC 13-64) | Accepted | 327 ms | 39100 KB |
| 368217641 | Mar/26/2026 08:24 | w114 | A - AD 2020 | C++23 (GCC 14-64, msys2) | Accepted | 828 ms | 119300 KB |
| 96328728 | Oct/22/2020 08:05 | TLE on text 1000000: LIKEIKE, Ging_, Edwardwsb# | A - AD 2020 | GNU C++11 | Accepted | 124 ms | 70500 KB |
| 108370084 | Feb/24/2021 10:04 | alanzzz | A - AD 2020 | C++17 (GCC 7-32) | Accepted | 482 ms | 131500 KB |
| 117398474 | May/26/2021 14:03 | vjudge5 | A - AD 2020 | C++17 (GCC 7-32) | Accepted | 171 ms | 48000 KB |
| 213749532 | Jul/14/2023 12:00 | jjjj123123 | A - AD 2020 | C++20 (GCC 11-64) | Accepted | 311 ms | 19600 KB |
| 215350334 | Jul/24/2023 15:04 | vjudge1 | A - AD 2020 | C++17 (GCC 7-32) | Accepted | 873 ms | 18900 KB |
| 312886441 | Mar/29/2025 09:01 | luochenpiaoxue# | A - AD 2020 | C++23 (GCC 14-64, msys2) | Accepted | 765 ms | 34600 KB |
| 248232421 | Feb/25/2024 15:52 | acmgod | A - AD 2020 | C++17 (GCC 9-64) | Accepted | 171 ms | 31300 KB |
| 257553792 | Apr/21/2024 14:05 | Krito. | A - AD 2020 | C++20 (GCC 13-64) | Accepted | 890 ms | 156600 KB |
| 170368866 | Aug/31/2022 12:54 | sakuracopic | A - AD 2020 | C++20 (GCC 11-64) | Accepted | 404 ms | 78300 KB |
| 113623157 | Apr/20/2021 17:26 | vjudge3 | A - AD 2020 | GNU C++11 | Accepted | 327 ms | 2000 KB |
| 117064662 | May/23/2021 08:59 | vjudge5 | A - AD 2020 | MS C++ 2017 | Accepted | 249 ms | 41100 KB |
| 111978929 | Apr/04/2021 11:06 | vjudge4 | A - AD 2020 | GNU C++11 | Accepted | 109 ms | 145400 KB |
| 112776618 | Apr/12/2021 15:34 | vjudge1 | A - AD 2020 | C++17 (GCC 9-64) | Accepted | 296 ms | 16400 KB |
| 113485216 | Apr/19/2021 15:33 | vjudge3 | A - AD 2020 | GNU C++11 | Accepted | 997 ms | 88200 KB |
| 197014455 | Mar/12/2023 08:21 | vjudge3 | A - AD 2020 | C++17 (GCC 9-64) | Accepted | 109 ms | 21900 KB |
| 325837193 | Jun/23/2025 22:26 | Henhobo | A - AD 2020 | C++23 (GCC 14-64, msys2) | Accepted | 250 ms | 3900 KB |
| 113583604 | Apr/20/2021 09:13 | vjudge5 | A - AD 2020 | GNU C++11 | Accepted | 530 ms | 35900 KB |
| 254840744 | Apr/03/2024 15:36 | vjudge2 | A - AD 2020 | C++14 (GCC 6-32) | Accepted | 983 ms | 103300 KB |
| 129586225 | Sep/22/2021 15:57 | Purin Technology: Komeiji_Green, chino123, purinliang# | A - AD 2020 | C++17 (GCC 7-32) | Accepted | 608 ms | 87200 KB |
| 243421701 | Jan/26/2024 18:25 | jubair7 | A - AD 2020 | C++20 (GCC 11-64) | Accepted | 249 ms | 27500 KB |
| 255201245 | Apr/06/2024 10:34 | vjudge.10 | A - AD 2020 | C++20 (GCC 13-64) | Accepted | 155 ms | 55500 KB |
| 255838317 | Apr/09/2024 10:47 | vjudge.1 | A - AD 2020 | C++17 (GCC 7-32) | Accepted | 312 ms | 800 KB |
| 137965100 | Dec/04/2021 11:45 | vjudge4 | A - AD 2020 | C++14 (GCC 6-32) | Accepted | 857 ms | 135200 KB |
| 215311891 | Jul/24/2023 09:49 | dissright | A - AD 2020 | C++20 (GCC 11-64) | Accepted | 842 ms | 3900 KB |
| 110890490 | Mar/24/2021 14:57 | zhi_yi | A - AD 2020 | C++17 (GCC 7-32) | Accepted | 873 ms | 32600 KB |
| 332473750 | Aug/05/2025 11:57 | ShahariarIslan | A - AD 2020 | C++17 (GCC 7-32) | Accepted | 561 ms | 19600 KB |
| 174929843 | Oct/07/2022 08:27 | vjudge2 | A - AD 2020 | C++20 (GCC 11-64) | Accepted | 312 ms | 43000 KB |
| 99614475 | Nov/26/2020 09:58 | vjudge3 | A - AD 2020 | C++17 (GCC 7-32) | Accepted | 982 ms | 130900 KB |
| 148523795 | Mar/06/2022 09:30 | vjudge1 | A - AD 2020 | C++17 (GCC 9-64) | Accepted | 811 ms | 32600 KB |
| 215318573 | Jul/24/2023 10:46 | vjudge5 | A - AD 2020 | C++20 (GCC 11-64) | Accepted | 327 ms | 19600 KB |
| 153118189 | Apr/09/2022 09:26 | HDU-T114514: 2020hduyz, Nene, Pedestrian1# | A - AD 2020 | C++17 (GCC 9-64) | Accepted | 358 ms | 64800 KB |
| 256203259 | Apr/12/2024 09:06 | vjudge1 | A - AD 2020 | C++20 (GCC 13-64) | Accepted | 765 ms | 117500 KB |
| 169759459 | Aug/27/2022 08:20 | vjudge5 | A - AD 2020 | C++17 (GCC 7-32) | Accepted | 156 ms | 39100 KB |
| 97785305 | Nov/06/2020 17:44 | FST stay night: F0_0H, RUSH_D_CAT# | A - AD 2020 | C++17 (GCC 7-32) | Accepted | 420 ms | 600 KB |
| 152290176 | Apr/01/2022 15:35 | CJLU_BlackSmith: paradoxxd, Luiyad# | A - AD 2020 | C++20 (GCC 11-64) | Accepted | 779 ms | 137500 KB |
| 253027417 | Mar/24/2024 08:46 | vjudge4 | A - AD 2020 | C++17 (GCC 7-32) | Accepted | 93 ms | 14400 KB |
| 152440871 | Apr/02/2022 03:25 | paradoxxd | A - AD 2020 | C++17 (GCC 7-32) | Accepted | 842 ms | 91800 KB |
| 368238466 | Mar/26/2026 12:16 | FElixZ11000 | A - AD 2020 | C++17 (GCC 7-32) | Accepted | 156 ms | 35300 KB |
| 112916376 | Apr/13/2021 13:50 | New AC Machine: Dallby, dreaming2019, CallmeChallenger# | A - AD 2020 | GNU C++11 | Accepted | 109 ms | 55400 KB |
| 215337747 | Jul/24/2023 13:25 | vjudge1 | A - AD 2020 | C++20 (GCC 11-64) | Accepted | 358 ms | 165200 KB |
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